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Glaucophane and Sillimanite Physical Properties


Sillimanite and Glaucophane Physical Properties


Physical Properties

Tenacity
Not Available   
Tough   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3-3.15   
3.20-3.26   

Fracture
Conchoidal, Brittle, Conchoidal   
Splintery   

Cleavage
Good on [110] and on [001]   
{010} perfect   

Mohs Hardness
6.0-6.5   
6-7.5   

Chemical Composition
[ ]Na2(Mg3Al2)Si8O22(OH)2   
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Glaucophane and Sillimanite Chemical Formula

While comparing Glaucophane and Sillimanite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Glaucophane and Sillimanite chemical formula.

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Glaucophane and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Glaucophane and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Glaucophane and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Glaucophane is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.

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